Boiler for articulated locomotives.



Patented Apr. 26, 1910.

3 SHEETS-SHEET 1.

INVE

H. S. VINCENT.

BOILER FOR ARTIGULATED LOCOMOTIVES.

s B m W H. S. VINCENT.

BOILER FOR ARTIOULATED LOCOMOTIVES.

APPLICATION FILED JAN.29, 1910.

Patented Apr. 26, 1910.

3 SHEETS-BEEET 2.

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H. S. VINCENT.

BOILER FOR ARTIGULATED LOCOMOTIVES.

APPLICATION TILED JAN. 29, 1910.

Patented Apr. 26, 1910.

3 SHEETS-SHEET 3.

WITN ESSES HARRY S. VINCENT, OF RIDGEWOOD, NEW JERSEY.

BOILER FOR ARTICULATED LOCOMOTIVES.

Specification of Letters Patent. Application filed January 29, 1910.Serial No. 540,748.

' Patented Apr. 26, 1910.

' To all whom it may concern:

Be it known that I, HARRY S. VINCENT, of Ridgewood, in the county of Beren and State of New Jersey, have invente a certain new and usefulImprovement in Boilers for Articulated Locomotives, of which improvementthe following is a specification.

My invention relates to boilers for locomotives of the so-calledarticulated type,

c'. 6., that in which two frames, each carrying inde endent sets ofdriving mechanism, are coup ed together by a pivot, so that while thelocomotive has a long wheel base, it is of suflicient flexibility toreadily pass curves in the track. In locomotives of this type, as

heretofore constructed, it has been the practice to attach the boilerrigidly to one of the frames only, permitting it to overhang the otherframe, upon whlch it is carried by sliding supports.

The primary object of my invention is to provide a boiler forarticulated locomotives, comprising two independent sections, each ofwhich may be rigidly secured to one of the two coupled frames and movetherewith independentl of the other frame and boiler section, said oilersections being articulated one to the other, that is to say, attachedthrough the intermediation of a movable joint in such manner as to bereadily uncoupled when desired to facilitate replacement of boiler tubesor permit access to the interior of the sections for other purposes.

A further object of my invention is to provide independent chambers inthe sections of the boiler for the reception of a superheater and areheater respectively, said chambers communicating by an articulatedflue connection through which the products of combustion pass from afirebox on the rear boiler section to a stack on the forward section.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is a side view, partly insection, of an articulated locomotive, illustrating an application of myinvention; Fig. 2, a transverse section, on an enlarged scale, through,the same, on the line a a of Fig. 1; Fi 3, a partial longitudinalsection, on a urther enlarged scale, showing the articulated flueconnection of the boiler section; Fig. 4, a similar section, showing astructural modification; and, Fig. 5, a front view, in elevation of therear section of the boiler.

My invention 'is herein exemplified as applied in connection with anarticulated compound locomotive, comprising a rear frame, 1, supportedon a plurality of driving wheels, 2, and a pair of rear trailing wheels,3, and a front frame, 1*, supporte on a plurality of driving wheels, 2.The drivin wheels of the rear frame are rotated, through the ordinaryconnections, by steam pressure in high pressure cylinders, 4, fixed tothe rear frame, and the driving wheels of the front frame are similarlyrotated by steam pressure in low pressure cylinders, 4, fixed to thefront frame. The front and rear frames are coupled, in the longitudinalcentral plane of the locomotive, b pivots, 5, passing through hin es, 6an 6, secured to the front and rear rames, respectively.

In the practice of my invention, I provide a boiler of the fire tubelocomotive type, which comprises a rear section, 7, having a firebox, 8,at its rear end, and which is secured rigidly to the rear frame, 1, andan independent forward section, 7?, having a smoke box, 7*, and stack,9, at its forward end, and which is -secured rigidly to the frontframe, 1. 'Except in the particular features of my invention hereinafterdescribed, the boiler accords substantially, in

, structural and o erative principle, with fire tube locomotive oilersof present standard construction.

The forward end of the rear section, 7, of the boiler is closed by ahead, 10, between which and the front flue sheet, 11, of the rear boilersection, to which a plurality of fire tubes, 12, extend from thefirebox, in the ordinary manner, there is located a chamber 13, which Iterm descriptively a preliminary smoke box, and in which a superheater,19, is shown as located. The rear end of the forward boiler section, 7,is similarly closed by a head, 10*,between which and the rear fluesheet, 11, of the front boiler section, there is located a chamber, 13,which I term an intermed ate smoke box, and in which a reheater of anysuitable form may be located. Fire tubes, 12, extend from the rear fluesheet, 11, of the forward smoke box front, 7, forms the ordinary form ofa Section of a sphere, secured at its smoke box, 7*, to which the stack,-9, is connected, and which, I term a final smoke box.

In the instance shown, the rear boiler section, 7, performs the functionofa steam generator and steam receptacle, and the forward boiler sectionserves as a feed water heater, its fire tubes, 12", being greater innumber than those of the rear section, and their upper rows beinglocated nearly as high as its top, so that no steam space is providedabove them. Feed water is sup-.

plied to the forward section through feed pipes 15, leading from theinjectors, and thence passes to the rear boiler section through asuitably articulated pipe or pipes, 15 It will, however, be obviousthat, if preferred, a lesser number of fire tubes may be used in theforward boiler section, so as to provide steam space therein and enableit to act as a steam generator and steam receptacle, similarly to therear section.

The rear and forward boiler sections, 7 and 7, are attached one to theother, preferably near their bottoms, by an articulated draft passage orflue,indicated on the drawings, as an entirety, by the reference symbol,16, through vwhich passage, the products of combustion pass from therear to the front section, in their traverse to the stack, .9. Thearticulation of the draft passage, 16, is inthe form of an air tightball or spherical joint, which is made between a draft passage section,16, which is in the rear end to the front head, 10, of the rear boilersection, and a draft passage section, 16 which is spherically formedinteriorly, at its outer end, to receive the section, 16*, and isfitted, with a limited degree of longitudinal traverse, inthe rear head,10*, of

the front boiler section. Suitable packing, 16, is fitted 1n a recess inthe spherical portion of the section, 16. .The center of the .ball jointis preferably in the same vertical plane as the common axis of thepivots, 5, by which the front and rear frames are connected. Thecylindrical portion of the draft passage section, 16*, fitsin acorresponding socket, 16, formed on the head, 10, and is made air tighttherein by a packing gland, 16, which fits in a recess in the socket,16, forming a stufiing box, which is filled with a suitable lubricatingheat resisting packing, 16. In order to insure and maintain ropercontact between the spherical suraces of the draft passage sections, 16and 16, they are connected by a rod, 17, having a spherical faced head,17*, which bears on 'a corresponding seat formed centrally in a frame orspider, 18, extending across the section, 16, and carries a sphericalfaced washer or wearing plate, 17 which is pressed by a spring, 17,against a corresponding seat on the inner side of a frame or spider, 18,extending across the section, 16 The adjacent end of the rod, 17, isthreaded to receive adjusting nuts,- 17, which, through a washer, 17,bear on the spring, 17, and enable its tension to be adjusted asdesired. As the section, 16, slides easily in the socket, 16, it will beseen that a comparatively light tension in the spring, 17, will sufliceto keep the spherical surfaces in contact.

The engine frames, 1 andl, being rigidly connected to the boilersections, 7 and 7 and the pivots, 5, and hinges, 6 and 6 admitting ofrelative movement only in a horizontal plane, it may be found advisablein practice to provide for relative transverse and vertical movements ofthe boiler sections. To this end, I provide a structural modification ofthe draft passagejoint, inwhich, as shown in Fi 4:, in addition to thespherical bearing a ove described, the draft passage section, 16*, has asliding bearing on the head, 10, of the rear boiler section, instead ofbeing rigidly connected thereto. The rear. face of the section, 16, isfinished to a flat surface, and abuts against a corresponding bearingface on. a supplemental section ring, 16

which: is secured to the boiler head, 10. The

frame or spider, 18, in this case, extends across the supplementalsection ring, 16 and a suitable lubricating heat resisting packing, 16is fitted in a .recess in the face of the latter. The draft passagesections 'are connected by a rod, 17 under spring tension,-

as in the instance first described.

It will be seen' that my invention provides a boiler comprising twoindependent sections, each rigidly secured to one of two articulatedengine frames, and embodying,

as a characteristic and novel structural fea-[ ture, the attachment ofthe sections of the boiler one to the other by an articulated flue tionwith the central plane thereof in passing curves, will be manifest tothose familiar with locomotive practice, and it presents the furthercapability of providing independent smoke boxes adapted for thereception of a superheater and a reheater respectively, and which areless liable to accumulate a deposit of unconsumed fuel, and betteradapted for the removal of any deposit thereof that may be made, than acombustion chamber of comparatively large volume interposed between twosets of boiler tubes.

I am aware that a boiler comprising two sect-ions, each provided with aset of tubes,

and attached one to the other by an intervening flexible section ofsubstantially the same diameter as the shells of the sections, has beenheretofore proposed, and I do not therefore broadly claim a boiler madein two sections, attached, with the capacity of relative movement one tothe other.

I claim as my invention and desire to secure by Letters Patent:

1. A boiler made in two sections, one section being lattachedfto theother, with the capacity of relative movement by an articulated flue ofsmaller diameter than the shells of the sections.

2. A boiler made in two sections, each having a smoke box at its endadjoining the other, said sections being attached one to the other by anarticulated flue, opening at its ends into said smoke boxes and ofsmaller diameter than the same and providing capacity of relativemovement of the boiler sections.

3. The combination, in a locomotive boiler,

of-a rear section having a firebox at its rear end and a smoke box atits front end, and an intervening set of fire tubes, a forward sectionhaving a smoke box at each end and an intervening set of fire tubes, andan articulated flue, of smaller diameter than the sections and attachingthe adjacent smoke boxes thereof, one tothe other with the capacity ofrelative movement of the boiler sections.

5. The combination, in a locomotive boiler, of a rear section having afirebox at its rear end and a smoke box at its front end and anintervening set of fire tubes, a forward section having a smoke box ateach end and an intervening set of fire tubes, a superheater located inthe smoke box of the rear section, a reheater located in the rear smokebox of the forward section, and an articulated flue, of smaller diameterattaching the adjacent smoke boxes thereof one to the other with thecapacity of relative movement of the boiler sections.

6. The combination, in a locomotive boiler of two sections, disposed onein advance of the other, and a ball and socket joint articulated flue,connected, at its opposite ends, to the boiler sections.

7. The combination, in a locomotive boiler,

than the sections and of a rear section, a forward section, heads closinthe adjacent ends of said sections, an articulated flue com rising aball section connected to the head of one boiler section and a socketsection fitting movably in the head of the other boiler section, andmeans for imparting spring pressure to the abutba-l ting surfaces of theand socket sections.

8. The combination, in a locomotive boiler, of a rear section, a forwardsection, heads closin the adjacent ends of said sections, an articu atedflue comprising a ball section connected to the head of one boilersection and a socket section fitting movably, in the head of the otherboiler section, means for imparting spring pressure to the abuttinsurfaces of the ball and socket section, an means for permittingmovement of the ball section relatively to the head of the adjacentboiler section.

9. The combination, ina locomotive boiler, of a rear section, a forwardsection, heads closin the adjacent ends of said sections, an articu atedflue ball section connected to the head of one boiler section, a socketand stuffing box on the head of the other boiler section, an articulatedflue socket section fitting in said socket and stufling box, and meansfor imparting spring ressure to the abutting surfaces of the ba 1 andsocket sections.

10. The combination, in a locomotive boiler, of a rear section, aforward section, heads closing the adjacent ends of said sections, anarticulated flue ball section connected to the head of one boilersection, an

articulated flue socket section fitting movably in the head of the otherboiler section, a rod passing centrally through said ball and socketsections and abutting thereon by spherical faced bearings, a springimposing pressure on the bearings of. said rod, and an adjusting nutengaging said rod and bearing on said spring.

11. The combination, in a locomotive boiler, of a rear section, aforward section, heads closing the adjacent ends of said sections, anarticulated flue ball section abutting against, and movable relativelyto, a flat bearing connected to the head of one boiler section, anarticulated flue socket section fitting movabl in the head of the otherboiler section, a rot passing centrally through said ball and socketsections and abutting thereon by spherical faced bearings, a springimpos ing pressure on the bearings of said rod, and an adjusting nutengaging said rod and bearing on said spring.

12. A boiler made in two sections, one section being articulated to theother by a movable joint connection.

13. A boiler made in two sections, one section being articulated to theother by a two part movable joint flue.

14. A boiler made in two coupled sections,

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the coupling member of the sections being i the two boiler sectionstogether, and forming articulated by a movable joint. I a flue.

15. The combination, in a .locomotive HARRY S VINCENT boiler, of twosections, one disposed in ad- 5 ,vance'of the other on the samelongitudinal Witnesses: i

line and spaced. apart, and an intervening J.. SNOWDEN BELL movablejoint articulated section coupling M. LAWSON DYER.

